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Bshaips

wr 400 cam mods

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i know there is tons of threads about how to make to my wr400 run like a yz by advancing one of the cams. if anyone knows or has the info and you could please share that would be great. Thanks

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i know there is tons of threads about how to make to my wr400 run like a yz by advancing one of the cams. if anyone knows or has the info and you could please share that would be great. Thanks

Go here http://motoman393.thumpertalk.com/ and look under Tech Articles/Engine/Changing a WR's cam timing to YZ timing

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You might want to think about installing an 03 YZ cam to get YZ timing AND autodecompression.

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Ditto to what Birddy says, the 03 YZ cam is the way to go, it's a drop in, just need to re-shim the valves.

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